package com.atguigu.gulimall.product.config;

import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @Author : Jungle
 * @Description :
 *      @EnableConfigurationProperties 开启属性配置的绑定功能
 *         相当于注入了这个对象
 *         使用方式1、 注入
 *         @Autowired
 *          CacheProperties cacheProperties;
 *          方式2、作为参数直接放入方法中
 *          RedisCacheConfiguration  redisCacheConfiguration(CacheProperties cacheProperties)
 */
@EnableConfigurationProperties(CacheProperties.class)
@EnableCaching
@Configuration
public class MyCacheConfig {
    //@Autowired
    //CacheProperties cacheProperties;

    /**
     * 配置文件中的东西没有用上
     * 1、原来和配置文件绑定的配置类是这样子的
         * @ConfigurationProperties(prefix = "spring.cache")
         * public class CacheProperties
     * 2、要让他生效
     * @EnableConfigurationProperties(CacheProperties.class)
     */
    @Bean
    RedisCacheConfiguration  redisCacheConfiguration(CacheProperties cacheProperties){
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
        //修改了key value的序列化机制
        config = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        config =config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
        //获得redisProperties 配置
        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        //将配置文件中的所有配置都生效
        if (redisProperties.getTimeToLive() != null) {
            config = config.entryTtl(redisProperties.getTimeToLive());
        }
        if (redisProperties.getKeyPrefix() != null) {
            config = config.prefixKeysWith(redisProperties.getKeyPrefix());
        }
        if (!redisProperties.isCacheNullValues()) {
            config = config.disableCachingNullValues();
        }
        if (!redisProperties.isUseKeyPrefix()) {
            config = config.disableKeyPrefix();
        }
        return config;
    }
}
